Gaya APA

Kellough, R, D., Roberts, P, L. (1998.). A Resource guide for elementary school teaching : planning for competence (4th Ed.). New York: Macmillan.

Gaya MLA

Kellough, Richard, D.., Roberts, Patricia, L.. "A Resource guide for elementary school teaching : planning for competence". 4th Ed. New York: Macmillan, 1998.. Text.